apparatus for decoding of ADdress In Pre-groove signal

摘要

The present invention simplifies the complexity of the phase demodulator in the ADIP decoding device, and a nervous wobble signal demodulated in the wrong as overcoming the ADIP information, and for providing a correct decoding of the device, and a phase demodulator for processing a phase-modulated wobble signal, and the PLL that tracks the phase of the wobble signal to the phase demodulator, with the wobble signal from the tracking PLL Cumulative start control signal and generating a control signal to determine which input to the phase control signal generation unit and a demodulator, the first ADIP data bit to determine a result based on the determination by 0 or 1 of the phase demodulated data from the phase demodulator, detector and, by the degradation of the wobble signal is demodulated by the phase demodulator incompletely second bit detector to determine the ADIP data by using the accumulated result of the wobble of the phase demodulator, if it is determined in the first bit detector untested and, by using the first bit is the detector or the ADIP data bits detected by the second detector are configured to include a counter indicating the phase wobble modulation according to the wobble period.